50 YEARS OF OPERATION 6 6. An Electric Power Research Institute (EPRI) experiment being assembled at the Test Train Assembly Facility (TTAF). 1. Backup diesel generator in case of loss of commercial power. 2. ATR Simulator. 3. Operators accessing a refueling port during an outage. 4. Radiation Measurements Laboratory (RML) at ATR Complex. 5. ATR Complex maintenance organization employees fabricate an ATR work platform. 4 5